Auth bypass in Hide Thread Content Project

CVE-2021-3337

The Hide-Thread-Content plugin through 2021-01-27 for MyBB allows remote attackers to bypass intended content-reading restrictions by clicking on reply or quote in the postbit.

Vulnerability class: Broken Access Control

EPSS: 0.115 (95.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-3337?
CVE-2021-3337 is a high-severity vulnerability in Hide Thread Content Project, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2021-01-28.
How severe is CVE-2021-3337?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-3337 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.